Garis K melalui (0, 2) & (-2, 4) tentukan Persamaan garis K

m = 4-2 / -2-0
m = 2/-2
m = -1

pers. garis =
y - 4 = -1 (x+4)
y - 4 = -x -4
x + y = -4 + 4
x + y = 0